Tube-frame mechanism



'W. W. ROBERTSON TUBE mum: MECHANISM Filed Dec. 27, 1923 Sept 22, 1925.

Patented Sept. 22, 1925.

UNITED STATES PATENT OFFICE.

WILLIAM W. ROBERTSON, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

TUBE-FRAME MECHANISM.

Application filed. December 27, 1923. Serial No. 683,046.

To all whom it may concern:

Be itknown that I, VVILLIAM W. carersoN, a subject of t-heKing of Great Britain,

residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Tube-Frame times become accidentally detached from the transporting chains, and the supporting brackets and attaching springs have been found subject to occasional breakage. An application has been previously filed in the name of Arthur P. Paine. on which Patent No. 1,498,561, issued May 13, 192%, in which rigid members depending from the chain links are attached tothe tube. frame by sliding plungers or latches enclosed within the tube. i f 'It is the object of my invention to improve the construction therein shown by providing means for accurately guiding the depending members as they approach the position in which the tube frames are attachedto the chains.

To this end, I provide discs rotatable with the chain driving sprockets and engaging the depending members on one side thereof and I also provide fixed arms engaging the other sides of the depending members as they approach the position in which they cooperate with the tube frames for attachmentthereof.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which Fig. lisa front elevation of a portion of a yarn tube frame, together with attaching and transporting. devices therefor;

Fig. 2-is a side elevation of the parts shown in Fig. 1; I

Fig. 3 is a detail sectional view, taken along the line 33 in Fig. 1, and i Fig. 41 is a perspective view of one of the tube frame holding devices.

Referring to the drawings, I have shown a chain driving shaft 10 having sprockets 11 fixed thereonand intermittently actuated by driving .mechanism (not shown) to presenteyarn tube frames 12 successively in the position indicated in Fig. 2.

Rigid members 13 are attached to alternate links of the transporting chains 14 and are provided with openings 16 and longitudinal slots 17 at their outer. ends. The members 13 are received in sockets 18 and are secured therein by latches or pluiigers 2O slidable in bearings within the tube frame 12 and yieldingly pressed outward by springs 21. Holding arms or devices 22 are mounted in the usual manner in the, loom to which the mechanism pertains and are actuatedto move'inward to receive and detach the tube'fr'ames and to thereafter present the tube frames to the warps. A lug or projection 23 in the member 22 engages the, plunger and presses the same inward.

to detach the members 13 before the tube frame is moved downward toward the warps.

The parts thus far described are substantially of the form shown in the prior application of Paine and in themselves form no,

part of my present invention.

A second lug or projection 24 is provided to engage the upper surface of the socket 18 as the holding device 22'moves downward, thus positively withdrawing the tube frame from the rigid members 18.

It is essential for successful operation of this type of tube frame mechanism that the member 13 should be accurately positioned laterally when a tube frame is to be attached thereto and for this purpose I have provided the guiding devices shown in Figs. 1 and 2.

At each side of the loom and at the outer mounted on a portion 26 of the loom frame and closely engaging the members 18 on the outer sides thereof. I also provide a disc 27 mounted on the shaft 10 and preferably rotatable with the sprocket 11. This disc engages the members 13 on the inner side and presses them outward a ainstthe fixed arm 25.

The members 13 are thus held from lateral displacement in either direction and are accurately aligned witlrthe sockets 18 as the tube frames are returned to attaching position. It will be understood that the rigid members 13 are offset as shown in Fig.

1 merely for the purpose of clearance.

Having thus described my invention and the advantages thereof, I do not wish to be "limited'to the detailsherein disclosed otherwise than-as set forth in the claims, but

what I claim is z- 1.111 a loom, a transporting pattern chain, a'yarn tube frame, a rigid attaching member permanently secured to said chain and depending therefrom, .a yielding attaching member carried by said tube frame and co-operating with saidrigid member to detachably secure said tube frame to said chain, and means to guide said member laterally as the parts approach attaching position.

2. 'In a loom, a transporting pattern chain, a yarn tube frame, arigid attaching -member permanently secured to said chain and dependmg therefrom, a yielding attachmember permanently secured to said chain and depending therefrom, a yielding attaching member carried by said tube frame and cooperating with said rigid member to detachably securesaid tube frame to said chain, a fixed arm to engage said member on one side-as it approaches attaching position, and means to hold said member against said arm.

4. In a loom, a transporting pattern chain, a yarn tube frame, a rigid attaching member permanently secured to said chain and depending therefrom, a yielding attaching member carried by said tube frame and cooperating withsaid rigid member to detachably secure said tube frame tosaid chain,-a sprocket for-said chain, a disc on said sprocket to engage one side of said attaching member,-and an armiixed to engage the other side of said attaching member to position said member laterally as said member approaches attaching pos1- tion.

Ina loom, transporting pattern chains, a yarn tube frame, rigid attaching members permanently secured to said chain and depending therefrom, yielding attaching members'carried by said tube frame and cooperating withsaidri-gid members to detachably secure said tube frame to said chains, and holdingarmsforsupporting a detached tube frame, each of said arms having a projection thereon engaging a portion'of said tube frame'to positively detach said tube frame from said rigid members.

In testimony whereof I have hereunto affixed my signature. 

